OMG Sarah! You are a wealth of great information!
When I started dermarolling. I was on a quest to take care of myself eating right and take care of my health and skin. I started dermarolling and oil cleansing method (OCM) around the same time (beginning of May 2013). Prior to dermarolling and OCM, I started using Tazorac around Feb 2013 with little success, but for real effect, it should take many months. Anyhow, when I started dermarolling, OCM, Tazorac, facial serums (with ingredients such as vitamin C, Vitamin B3, l-carnosine. l-carnitine, l-glutathione and Super Oxide dismutase and DMAE). I really see improvement. I cannot say that one of these solely responsible to the improvement, since I didn't do a scientific test with a control and introduce one factor at a time. But, I theorize that OCM really responsible for pores size reduction. I never dermaroll my nose and I've washed and used serum on my nose without seeing any changes in pore size until I started OCM. My nose is the place where I can deduce that OCM really works at pore size reduction due to unclogging of oily sebum by performing OCM.
First I tried mixture of castor oil and olive oil. I found out that my skin really doesn't like olive oil, as I would get a few small acne afterward. So, I tried mixture of castor oil and coconut oil. My skin likes this combination but the coconut oil keeps solidifying and make it hard to dispense. So currently I'm using mixture of castor oil and grape seed oil, and this combination really works for me. My skin loves it, but I like to wash my face afterward with facial wash with salicylic acid. After 5 months of doing, it really helps with my pore size. And, I can tell that the texture and discoloration of my skin really improve because of dermarolling, Tazorac and facial serums. I will give an update with pic on my skin condition after 6 months of dermarolling.
Lastly, thank you for hosting this site and the great products especially the microneedling tools.